Zungaro jahu and Z.
zungaroare the two valid species of the genus Zungaro.
The Amazonian species, Z. zungaro, is listed
as "overexploited or endangered by overexploitation"
in Brazil (MMA, 2004). Jau (Z. jahu) is listed
as being vulnerable in two Brazilian states, ie, Minas
Gerais and Paraná (Machado et al, 1998;. &
Mikich Bérnils, 2004). The Minas Gerais List
Has been recently revised, but has not yet been published.
Jau will be listed as critically endangered in the
new Minas Gerais list. Habitat: Zungaro
jahu (Ihering, 1898), is endemic to the rivers
that form the La Plata River basin (in Paraná
river, Paraguay and Uruguay River), occurring in Argentina,
Bolivia, Brazil, and Paraguay (Lundberg & Littmann,
2003 ; Zaniboni Filho & Schulz, 2003). Jau is
one of the largest Neotropical catfishes and may reach
a weight of up to 150 kg (Ihering, 1929). It is a
main stem migratory species (Agostinho et al., 2003,
Resende, 2003), but its migratory movements are poorly
known. Reproduction: Jau Reaches
maturity at 70 cm (total length) and spawns from December
to February in the upper Paraná River (Agostinho
et al., 2003). Jau is nocturnal and piscivorous, and
adults prefer deeper habitats in large rivers (Augustine
et al. 2003; Resende, 2003). Remarks:
It is an important commercial and sport fish, and
substantial commercial landings still Occur in long,
free-flowing river stretches (Matthew et al., 2004).
However, jaú Has Been overexploited in Paraguay
River and Parana River (Augustine et al. 2003; Resende,
2003). Also, it has Practically disappeared in the
southern part of its distribution area (Quirós,
1993). It used to be abundant in the Rio Grande (Azevedo,
1965), but now Occurs in only a few places (Godinho,
1998). In addition to the fragile conservation status
of jaú, its biology and ecology are poorly
known (Augustine et al. 2003; Resende, 2003).
Paraná-Paraguay River basin. Type locality:
Sao Paulo [Brazil].
140.0cm. (4ft 8ins)
Carlos Bernardo Mascarenhas
Alves; Luiz Gustavo Martins da Silva and Alexandre
Lima Godinho, Radiotelemetry of a female
jaú, Zungaro jahu (Ihering, 1898) (Siluriformes:
Pimelodidae), passed upstream of Funil Dam, Rio Grande,
Brazil. Neotrop. Ichthyol. vol.5 no.2 Porto Alegre
2007. Ferraris, C.J. Jr., 2007. Checklist
of catfishes, recent and fossil (Osteichthyes: Siluriformes),
and catalogue of siluriform primary types. Zootaxa
1418:1-628. Froese, R. and D. Pauly.
Editors. 2009. FishBase.World Wide Web electronic
publication.www.fishbase.org, version (22/2016).